Electronics Forum | Tue Apr 26 11:22:48 EDT 2005 | denismeloche
I have found that Sn62 solder gives better strength and leach resistance when soldering to gold surfaces. The gold needs to be at least 5 to 10 micro inches thick to prevent nickel oxidation but if over 25 micro inches will cause brittleness. I hav
Electronics Forum | Wed Apr 27 04:16:54 EDT 2005 | Bryan
Hello everyone, During our PIH process we found much flux residual around or on the joints of PIH after reflow.We use the Indium smq92j no clean solder paste.but the residual is too much to be accepted.can anybody share with me some ideas to solve th
Electronics Forum | Mon Sep 12 13:31:11 EDT 2005 | stepheniii
Are there any write-ups anywhere? My boss wants to show a customer a write-up. I"m checking IPC specs but havn't found anything. I think almost everyone does it but is not a published standard test. I hope some organization has written it up as a st
Electronics Forum | Mon Jun 06 15:55:44 EDT 2005 | avalancher
Please also consider that Aegis also offers the Xtra-Net interaction software. I'm unaware if any of the other products offer this. I had a problem with one job I was working on. I called Aegis, he connected to my computer directly while talking to
Electronics Forum | Tue May 31 10:44:16 EDT 2005 | Scott B
We have found that when the HASL thickness is less than 5 microns the tin in the HASL reacts with the copper leaving a SnCu surface with poor solderability and microscopic grainy Pb islands. The IPC does not specify minimum HASL thickness but we now
Electronics Forum | Thu Jun 16 08:31:15 EDT 2005 | jh0n!
The most part I have the most difficulty with is a 16mil QFN. We found that reducing stencil thickness to 4mil, and reducing aperatures for the IC by 20%, and setting local fiducials to the IC helped immensely. We used to get 75% or more bridged ou
Electronics Forum | Fri Jul 15 13:58:32 EDT 2005 | seaK
Our production is putting QFN40 and QFN56 package on board. With 80% opening on terminal, 40% on thermal pad, we found QFN56 100% forming toe fillet, but it does not work out the same to QFN40. We suspect it's because of the weight of component.....
Electronics Forum | Tue Jul 05 10:27:34 EDT 2005 | GEB
The nozzles are brand new too (got them friday). 08MPF (0.08") is their part number. I tried using the air kiss feature in the setup mode and found that it blew the nozzle off the nozzle holder, not sure if this is ment to happen in this mode, but t
Electronics Forum | Wed May 03 15:16:59 EDT 2006 | patrickbruneel
Great to see you have found a solution because now it looks like the component manufacturers will take their share of copper to. Look here http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=10308&mc=2 Inds you have an
Electronics Forum | Tue Jul 12 08:44:58 EDT 2005 | jdengler
JBC is offering "Lead free" tips now. They have this on the web site: "JBC recently released a new series of tips featuring a thicker iron bath that we find more resistent to aggressive additives and flux as found in lead free alloy." We have not d
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